package cn.bigfire.wedesk.net.fivesocket.frame;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.util.CharsetUtil;

public class TextFiveFrame extends AbsFiveFrame {
    /**
     * Creates a new empty text frame.
     */
    public TextFiveFrame() {
        super(Unpooled.buffer(0));
    }

    /**
     * Creates a new text frame with the specified text string. The final fragment flag is set to true.
     *
     * @param text
     *            String to put in the frame.
     */
    public TextFiveFrame(String text) {
        super(fromText(text));
    }

    /**
     * Creates a new text frame with the specified binary data. The final fragment flag is set to true.
     *
     * @param binaryData
     *            the content of the frame.
     */
    public TextFiveFrame(ByteBuf binaryData) {
        super(binaryData);
    }

    /**
     * Creates a new text frame with the specified text string. The final fragment flag is set to true.
     *
     * @param finalFragment
     *            flag indicating if this frame is the final fragment
     * @param rsv
     *            reserved bits used for protocol extensions
     * @param text
     *            String to put in the frame.
     */
    public TextFiveFrame(boolean finalFragment, int rsv, String text) {
        super(finalFragment, rsv, fromText(text));
    }

    private static ByteBuf fromText(String text) {
        if (text == null || text.isEmpty()) {
            return Unpooled.EMPTY_BUFFER;
        } else {
            return Unpooled.copiedBuffer(text, CharsetUtil.UTF_8);
        }
    }

    /**
     * Creates a new text frame with the specified binary data and the final fragment flag.
     *
     * @param finalFragment
     *            flag indicating if this frame is the final fragment
     * @param rsv
     *            reserved bits used for protocol extensions
     * @param binaryData
     *            the content of the frame.
     */
    public TextFiveFrame(boolean finalFragment, int rsv, ByteBuf binaryData) {
        super(finalFragment, rsv, binaryData);
    }

    /**
     * Returns the text data in this frame.
     */
    public String text() {
        return content().toString(CharsetUtil.UTF_8);
    }

    @Override
    public TextFiveFrame copy() {
        return (TextFiveFrame) super.copy();
    }

    @Override
    public TextFiveFrame duplicate() {
        return (TextFiveFrame) super.duplicate();
    }

    @Override
    public TextFiveFrame retainedDuplicate() {
        return (TextFiveFrame) super.retainedDuplicate();
    }

    @Override
    public TextFiveFrame replace(ByteBuf content) {
        return new TextFiveFrame(isFinalFragment(), rsv(), content);
    }

    @Override
    public TextFiveFrame retain() {
        super.retain();
        return this;
    }

    @Override
    public TextFiveFrame retain(int increment) {
        super.retain(increment);
        return this;
    }

    @Override
    public TextFiveFrame touch() {
        super.touch();
        return this;
    }

    @Override
    public TextFiveFrame touch(Object hint) {
        super.touch(hint);
        return this;
    }
}
